ASTROSAT CZTI

Data Quality Report

Orbit 12913

Creation date: 2024-06-27T16:33:53.151812
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_116T01_9000001896_12913cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12913cztM0_level2_quad_clean.evt
Size (bytes)506,767,680113,688,000
Size483.3 MB 108.4 MB
Events in quadrant A3,345,583775,946
Events in quadrant B4,713,868716,250
Events in quadrant C2,891,167772,184
Events in quadrant D3,962,273732,090

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139212
B0181571
C0130981
D0160361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63991181.844038%
B639982912.955149%
C6399641.000156%
D63991742.719175%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7315 6401 16 16 0.22% 0.25%
B 7315 6400 391 391 5.35% 6.11%
C 7315 6401 1 1 0.01% 0.02%
D 7315 6401 89 89 1.22% 1.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 248 222734 1418.85 771 756 156.4
A 1 162 47322 297.64 771 756 156.4
A 1 178 23327 144.27 771 756 156.4
B 4 239 1659367 12510.06 714 697 132.6
B 3 64 179738 1350.37 714 697 132.6
B 0 214 27956 205.59 714 697 132.6
C 13 61 5527 28.37 740 745 168.5
C 14 234 3080 13.85 740 745 168.5
C 8 222 2273 9.07 740 745 168.5
D 1 52 930384 5210.39 738 715 178.4
D 8 195 176066 982.77 738 715 178.4
D 13 104 37666 207.09 738 715 178.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter